Sewing-machine.



LHAYES. SEWINGMACHINE. APPLICAT ION FILED OCT. 7. I910- Patented Feb. 20,1917.

3 SHEETS-SHEET I 1 cums Pnsns 1a.. rnom-Lmm. wAsnmamn. 124 a J. HAYES.

SEWING MACHINE.

APPLICATION FILED OCT. 7, I9").

Patented Feb. 20, 1917.

3 SHEETSSHEET 2,.

J. HAYES.

SEWING MACHINE.

APPLICATION FILED OCT. 1. 1910.

1,216,687. v Patented Feb.20,1917,

3 SHEETS-SHEET 3.

STAtrEs LTOI-IN HAYES, or AMSTERDAM, new YORK, nssrenon TO nivionsrnornn MACHI E f GOMBALTY,:OE CHICAGO, ILLINQIS,HA CORPORATION or ILLINOIS.

snwrne-ivrnonmn.

. Application filed omen,

To all whom it may concern:.'-

Be it known that: I,.JOHN HAYES, a citizen ofthe United States, residing at Amsterdam, in the county of Montgomery, State. of New York, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a description, reference being had to the accompanying drawing and to the letters and figures of reference marked thereon.

The present invention relates to new and useful improvements in sewing machines, and more especially to the feeding mecha nism of a sewing machine. f r

The invention as herein shown is espe cially adapted to machines of the character which operate to full or gather a piece of fabric prior to stitching the same; orfull or gather one piece of fabric relative to another, and secure the same together. When placing a bindingstrip or the like upon a knitted fabric, and more especially when binding across the wales of a knitted fabric, the knittedfabric is very apt to be come stretched or distorted in the stitching voperation. By my improvedmechanism', the

' stitched together.

knitted fabric may be'fed slightly faster than the binding-strip or non-elastiemata rial, thus overcoming the tendency of the knitted fabric to stretch'sothat the-two pieces'of fabric will be evenly and smoothly It is sometimes desirable when stitching one piece of fabric to another of the above character, to cause'the fulling action of the feeding mechanism to cease, asfor example, when crossingstay strips and the like; and the invention, therefore, contemplates p'roviding mechanism whereby the fulling action of the feeding mechanism may be rendered ineffective whenever-desired, without stopping the stitching mechanism. v

Machines of the character to which this invention relates are usually'known in the trade as collaret machines, and are used for binding the collar or neck openingf'of knitted underwear, the'binding strip being of different material from that of the garment itself. A differential feed mechanism is usually a part of such machines, that is, a twomotion feed, in which the feed dog in front of the needle moves at a'difl'erent rate of speed from theother part, and crowds in, fulls'or gathers'the fabric which it engages.

It is the objectof myxinvention topro- Specification of. Letters Patent. P tent gq), 9 7, I

1910. Seria1No.585 ,790. i

vide a mechanism by which the effective or ineffective action of the front feed dog may be controlledat the will of the operator,

preferably thenormal action of'the parts bei -ing to cause the feeding mechanism to work differentially, the forward feed dog being thrown out of effective relation to the fabric whenever desired, especially when crossing the'buttonstay strips or front facings of the garment;v I 3 matters hereinafter described and referred to in the appended claims.

' Figure lgis a plan view of the cloth plate andgpresser foot of a sewing machine, part ofthe throat plate and presser' foot being removed, the-Presser bar shown in section,

and, the binding guide and folder being shown in position;

Fig. '2 is an end view, partly insection,

of a portion of a sewing machine embodying my invention, both feedsfbeing shown depressed,'the forward feed being shown in effective position, with respect to cooperation with the rear feed, v Fig. 3 is a similar view, showing both feed dogs'raised and operating on the fabric; Fig; 4 is a detail View of the feed dogs and the means for throwing theforward dog into and out ofoperation, the twopositions thereof being shown respectively, in dotted and full lines;- I r j Fig. 5 is a plan view of the feeding IIlGCllf anism; f. 1 Fig. 6 is a detail view of the support for the forward feed dog, 'be'ingja section on line66ofFig.5;'

Fig; 7 is a detail view ofthetreadle-controlled lever whichoperates the forward feed dog; and

Fig. Sis a view of-the treadle and'achain and theleverjconnected to said chain. 1 In these drawings I have shown "a portion of a sewing machine of'the well known Union Specialtype, the bed 'plate' being" I i 65 The invention, therefore, consists in the i The main feed dog has three sets of serrations 8, and 11, the forward ones of the serrations 8 extending to the front alongside the needle, the serrations 10 being in 5 rear of said needle, and the serration 11 being in rear and to one side of the needle. The main feed dog, indicated at F in Fig.

5, is secured to the forward end' of the feed a differential movement with respect to the main feed dog it crowds or fulls orgathers the goods ahead of the needle. The serrations 10 act upon that portion of the goods which has been stitched together, and the serrations 11 on the binding, which is guided and folded around the edge of the body or knit goods by the folding guides 14: and 15.

. The main feed dog 8 is carried by a feed bar 9 which is pivotally attached to a rod 10*, carried bya feed rocker 11, which feed rocker is oscillated by the usual well known means of a crank on the forward end of the main shaft 6-. As the feed rocker oscillates, the main feed bar will be moved back and forth carrying with it the main feed dog 8. The eccentric 7, above referred to, gives a rising and falling movement to this feed bar. The auxiliary feed dog 9 is carried by an auxiliary feed bar 16, which is mounted so as to slide back and forth on the main feed bar. The main feed bar carries a plate on which this auxiliary feed bar rests and a retaining plate 12, secured to the main feed bar 9 by screws 13 extends over the auxiliary feed bar 16, as clearly shown in the drawings and retains'the same on. the supporting plate, so that it may be reciprd cated back and forth freely on the main feed bar and move up and down bodily with the main feed bar, through the action of the eccentric 7 on said main feed bar. The auxiliary feed bar 16 is provided with a lug 26.

A link27 pivoted to this lug has an adjustable connection through a bolt 14 with a slot 15 in an arm 16' carried by the feed rocker 11 The connection between the link 27 and the feed rockeris at a different point than the rod 10 which serves as the pivotal connection between the main feed bar and the feed rocker, and, therefore, a diiferential 19, attached at one end to theplate or bar 20, which carries the feed dog 9. Said bar 20 "has also a downwardly extending flattened portion 21, dovetailed in a groove 22 in the head 17 and projecting through said head is engaged by the forward end of a lever 23, pivoted at 24k to an extension 25 of the lug 26 on the auxiliary feed bar, to which lug the pivotal link 27 is attached to impart the differential movement to the auxiliary feed 5 bar. This lever partakes of the rising and falling and forward and backward movements of the auxiliary feed bar, and the spring 19 keeps the feed dog 9 in position of normal action, at the usual times, on the g fabric. V i

It'will be noticed from the arrangement of parts that when the rear end of the lever 23 is raised, the forward end will draw down on the part 21 and draw the feed dog 35 9-out of effective engagement with the fabric,thus causing all the work of feeding to be performed by the main feed dog.

In the class of machines to which this invention relates, it is desirable to dispense 99 with the operative action of the differential or auxiliary feed dog, when crossing facings or stay strips, and it is desirable to place it under ready control of the operator. For this purpose I pivot at the back of the machine, to the bed plate 1, at 28, a lever 29,

to which at one end is attached a chain 30 connected t0 the usual spring treadle 31 on the floor, or to a knee piece controlled by the operator, and the opposite end 32 extends beneath the rear end of the lever 23, so that when the end 32'is raised by drawing down the opposite end, it will force up the rear end of lever 23 and draw down the feed dog 9. Upon the release of the lever 29, it will return to normal position, and allow the spring 19 to return the feed dog 9 to operative position.

The lever 23 partaking as it does of the movements of the auxiliary feed bar even when the dog 9 is out of engagement with the work, that is, when the end 32 of lever 29 is forcing upward the rear end of said lever'23,'the parts of the two levers in contact are so made as to minimize friction and wear. The said lever 23 has a sliding contact with thelever 29. The upper end of a rib 33 on part 21 extends beneath the main feed dog and limits the upward movement of the auxiliary feed dog.. (See Fig. 5.)

Having thus particularly described my invention, what I claim as new and desire to secure by Letters Patent is 1. A fabric-feeding mechanism for sewing machines, including a main feed device, an auxiliary feed device carried thereby with means for imparting to the latter difierential movement with respect to the former, and means under the control of the operator for moving said auxiliary device from operative to inoperative isin operation; 1 I,

2. A fabric feeding "mechanism for sewing machines, comprising a main feed bar and feed dog carried'ther'eby, anauxiliary feed bar, and means for reciprocating both 1 feed bars,- a feed dog vertically movable. on the position-while the machine auxiliary feed'bar, and means under the control of the operatorfor moving' said feed dog from operative to inoperative position Without stopping or, retarding theaction of the machine. A

3. A' fabriefeeding mechanism for sewing machines, comprising a main feed bar and feed dog carried thereby, an auxiliary feed dog bar and a feed dog, spring-supported thereon in normally operative position, and means under the controlof theoperator for moving said feed dog from operative to inoperative position, without stopping orretarding the action of the machine. V -i 4'. A fabric feeding mechanism-for; sewing machines, comprising feeding devices and means for moving them differentially, one of said feeding devices including a carrier, a feed dog thereon,'.said feed dog being vertically movable on its carrier and normally held in position to effectively engagethe fabric, means under the control of the operator to impart said vertical movement thereto, to withdraw it from effective en'-' gagement with thefabric without varying its stroke and without stopping or retarding the action of themachine; v r

5. A fabric feeding mechanism for sewing machme.

6. A fabric feeding mechanism for sewing machines comprising a main feed dog, an

[auxiliary feed dog supporting bar with a a feed dog thereon in advance of themain feed dog, with means for moving the said auxiliary feed dog differentially with respectt'o the former, means for raising and lowering the auxiliary feed dog bodily, said means includmg a lever engaging at one end said auxiliary feed dog and pivoted to the auxiliary feed dog supporting bar, and means under the control of the operator adapted at will, to be brought into engagement with said pivoted lever to impart bodily move ment to said auxiliary feed dog.

7. A fabric feeding mechanism for sewing machines, comprising a main feed dog, an auxiliary feed dog supporting bar'with a feed dog thereon in advance of the main feed dog, means for moving the said auxiliary feed dog differentially with respect to the auxiliaryfeed dog bodily,-said.'means including a lever engaging atone end said auxiliaryfeed dogand pivoted to: the aux iliary feed dog-supporting bar, means under the control-ofthe operator adapted at will the {former means for raising and lowering to 'be 1 brought into engagement with said pivotedv lever to impartbodily movement in one'direction to said auxiliary feed dog, and

a Spring :for moving said lever in the opposite direction. i

.8. Afabric feeding'mec'hanism'for sewing machines, comprising a main feed dog, and

an auxiliary feed dog in" advaneecthereof With means for moving the latter difi'eren -J raising and lowering the auxiliary feed sdo'g tially with respect:tothe-former,means for bodily, said means including api'voted 1e; ver engaging at one end saidva'uxili'ary feed dog, means under the control of the opera tor adapted at will to be brought into engagement. .with said. pivoted lever to-Yimpart bodily movements to said auxiliary ffeed dog; including a second fpivotedlever arranged at rightgjangles to. said pivoted lever,

and adapted-' to en gage tat oneend the rear 'end'thereof, I

a a fabric feedingmechanismflaggi g machines, comprising a main feed dog, -'andan auxiliaryfeedd'og 1n advance thereof with means 'for moving thelatter-differen-I tially with respect to the: former, means for raising and lowering the auxiliary feed dog bodily, said means including a'pivot e'd lever *engagingat one end said auxiliary feed dog,

means under the control of the operator adapted at will to be brought into engagement with said pivoted lever to impart bodily movement to said auxiliary feed dog, a second pivoted lever arranged at right angles to said pivoted lever and adapted to engage at one end the rear end thereof, and

a spring for returning said feed dog to nor-f mal position.

10. In. a feeding mechanism for sewing machlnes, a maln feed-bar, an auxil ary feed bar, feed dogs carried by said main and auxiliary feed bars, means to impart work feeding movements to said main and auxiliary feed bars, and meanswhereby one of said feed-dogs can be given a bodily vertical movement with respect to" its carrying bar to withdraw it fromefieotive engagement with the fabric, without varying its stroke and without stopping or retarding the.

action of the machine. a

11. A fabric feeding mechanism for sewing machines including a feed bar, a head carried thereby having a groove formed therein, a feed dog having a shank engaging said groove and adapted to move vertically thereimsaid head having a socket, a spring supported in said socket and engaging the feed do and operating normally to, hold said fee dog raised, and means operating to lower said feed dog against the action of said spring.

12. A fabric, feeding mechanism for sewing-machines, including a main feedbar, a

feed dog carried thereby, an auxiliary feed bar, a vertically movable feed dog thereon, said vertically movable feed dogcarrying a projection adaptedto engage the under side of the main feed dog to limit the vertical movement of said auxiliary feed dog:

13. A feeding mechanism for sewing machines, including a main feed and an auxiliary feed, said main feed and auxiliary feed being arranged one in advance of the chines, including a main feed dog and an auxiliary feed dog, said main feed dog and auxiliary feed dog being-arranged one in advance of the other and having their work engaging surfaces in substantially the same horizontal plane, means whereby said auxiliary feed dog is given a differential movement with respect to the main feed dog, and

means whereby said auxiliary feed dog may be drawn out of the horizontalplane passing through the fabric engaging surface of the main and auxiliary feed dogs without stop pingor retarding the action of said feed device, and means'for automaticallyrestoring said auxiliary feed dog to'normal position.

15. A fabricfeeding mechanism for sewing machine's, comprising a main feed and an auxiliary feed, with connections between the same for imparting a common rise and fall, and differential forward and backward movements thereto, said auxiliary feed including a feed dog having bodily vertical movement out of'the range of the fabric, independent of the rising and falling movements common to both feeds whereby said auxiliary feed may be bodily withdrawn from effective cooperation with the fabric and means for moving the auxiliary feed dog bodily vertically out of range of the fabric without stopping the action of the feeding mechanism.

In testimony whereof I affix my signature, in presence of two witnesses.

7 J HN HAYES.

Witnesses EDWARD A. MGCAFFREY, JOHN J. T. SWAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. G. I 

